#define BP 2
#define LED1 10
#define LED2 11
#define LED3 9

unsigned long previousMillis1 = 0;
unsigned long previousMillis2 = 0;

const long interval1 = 1000;
const long interval2 = 500;

void setup() {
  pinMode(BP, INPUT_PULLUP);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis1 >= interval1) {
    previousMillis1 = currentMillis;
    digitalWrite(LED1, !digitalRead(LED1));
  }

  if (currentMillis - previousMillis2 >= interval2) {
    previousMillis2 = currentMillis;
    digitalWrite(LED2, !digitalRead(LED2));
  }

  bool etatBP = digitalRead(BP);
  digitalWrite(LED3, !etatBP);
}